Any brick made of clay, industrial waste or other local resources as the main raw material and made by different techniques, used in building to build load-bearing and non-load-bearing walls is called masonry brick.

Brick wall tiles can be divided into ordinary bricks and hollow bricks. Ordinary bricks are bricks with no holes or holes with a porosity of less than 15%; bricks with a hole ratio greater than or equal to 15% are called hollow bricks (hole ratio is the percentage of the total area of ​​the holes on the brick surface), and the size of the holes is small. The number is also called porous brick.

According to the production process, there are also sintered bricks and non-sintered bricks. The calcined bricks are sintered bricks, such as clay bricks (N), shale bricks (Y), coal gangue bricks (M), and fly ash bricks ( F) Etc. Steamed bricks (such as fly ash bricks, slag bricks, lime sand bricks, etc.) which are hardened by steam curing (or high pressure steam curing) are non-sintered bricks.

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